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2. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   Markings and Abbreviations. The related terms "rolled gold plate" and "gold overlay" may legally be used in some contexts if the layer of 14k gold constitutes no less than 5% weight of the item. In the jewelry industry, gold-filled is never abbreviated as "GF" or "gold GF" on product markings.

3. Black Hills gold jewelry - Wikipedia

   en.wikipedia.org/wiki/Black_Hills_gold_jewelry

   The finished jewelry known as Black Hills Gold must be produced in the Black Hills of South Dakota. The different colors of gold used for leaves and other details are made when the pure 24 Karat yellow gold is alloyed with copper to achieve the traditional 14 karat pink (or red) gold, and the gold is combined with silver to create the 14 karat ...

4. Hallmark - Wikipedia

   en.wikipedia.org/wiki/Hallmark

   A hallmark is punched into a section of a silver chain by a silversmith. A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of ...

5. Your Ring Could Be Worth Thousands: How To Spot Valuable ...

   www.aol.com/finance/ring-could-worth-thousands...

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6. Jewellery chain - Wikipedia

   en.wikipedia.org/wiki/Jewellery_chain

   Gold chain with garnets, rock crystals and enamel from the 16th century, Sweden. Jewellery chains, jewelry chains or body chains are metal chains [1] [2] that are used in jewellery to encircle parts of the body, [3] namely the neck, wrists and ankles, [4] and they also serve as points to hang decorative charms and pendants. [5] [6] [7]

7. BIS hallmark - Wikipedia

   en.wikipedia.org/wiki/BIS_hallmark

   The BIS system of hallmarking of gold jewellery began in April 2000. The standard specifications governing this system are IS 1417 (grades of gold and gold alloys, jewellery/artefacts), IS 1418 (assaying of gold in gold bullion, gold alloys and gold jewellery/artefacts), IS 2790 (guidelines for manufacture of 14, 18 and 22 carat gold alloys only ), IS 3095 (gold solders for use in manufacture ...